Sash-lock.



.No. 897,145. PATENTED AUG. 25, 1908.

G. S. PRIOR. SASH LOOK.

APPLICATION FILED MARJS, 1908.

Inventor: $MAQM y CM i lm ua/ Attest:

GILBERT S. PRIOR, OF HYDE PARK, MASSACHUSETTS. I

SASH-LOCK.

Specification of Letters Patent.

Patented Aug. 25, 1908.

Application filed March 18, 1908. Serial No. 421,804.

To all whom it may concern:

Be it known that I, GILBERT S. PRIOR, a citizen of the United States, residing at Hyde Park, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Sash-Locks, of which the following is a specification, reference being had therein to the accompanying drawings, which form a part thereof.

My invention relates to sash-locks and more particularly to a type thereof whereby the window-sashes may be locked in either a closed, or a partially open position.

The main object of the invention is to provide a sash-lock one cooperating element of which will be carried by each window-sash and will be adapted to interlock with and be secured to the other when said window is closed or partly opened, thus permitting the locking of the window, when open for ventilating purposes, so as to prevent intrusion; and, at the same time, permit the same mechanism to be used for locking the sashes when the window is entirely closed.

A further object is to provide a sash-lock of this character which may be located centrally of the sashes, so as to prevent the jamming of the sashes when opening or closing the window through the rod of said look.

A still further object is to provide a sashlock one member of which will be carried by a rod secured to the top bar of the upper sash, thus permitting the said locking mechanism to be used as a sash-lock and also as a window-pole for opening or closing the window.

A still-further object is to provide a sashlock by means of which the sashes will be locked relative to each other only so as to be capable of being moved simultaneously to permit the window to be opened at either the top or the bottom without releasing the lock.

A still further object is to provide a sashlock whereby the window may be locked in either the closed or the open position and the locking mechanism will be so positioned on the inside of the sash with no part thereof extending across the space between the sashes as to make access to the sash-lock, for the purpose of releasing the lock, difficult.

A still further object is to provide a sashlock whereby the window may be locked in either the open or the closed position; and the lock may be readily released and readjusted to vary the extent of the opening. And a still further object is to provide a sashlock which will be simple in its construction and mode of operation, and which may be applied to awindow without disfiguring same.

The invention consists, primarily, in the combination, in a sash-lock, of a rod, a universal joint whereby said rod may be attached to the top bar of the upper sash of the window and have movement toward and from the window and laterally thereof, cooperating interlocking members carried by said rod and by the top bar of the'lower window-sash, and means whereby said locking members may be secured in the locked position, or released, as desired and in such other novel features of construction and combinations of parts as are hereinafter set forth and described and. may be particularly pointed out in the claims hereto appended.

Referring to the drawings,Figure 1 is an elevation of the inside of a window showing a sash-lock embodying my invention applied thereto; Fig. 2 is a cross section of the top bar of the upper, and of the lower, sash showing an enlarged side elevation of the sashlock, the rod being broken away centrally thereof Fig. 3 is a detail view of the rod and Fig. 4 is a plan View of the top bar of the lower sash, the rod being shown in section.

Like letters refer to like parts throughout the several views.

In the embodiment of my invention shown in the accompanying drawings, (1 indicates a window-frame, b the top sash and c the bottom sash thereof. These parts are of ordinary construction, the sashes and 0 being supported by counter-weights and adapted to be raised and lowered past each other in parallel planes. This arrangement is such that a crack is necessarily formed between the two windows, which crack, by reason of the difference in thickness between the sashbars, and the pane of glass is of increased width when the window is opened. Ordinarily, the sash-lock for locking windows consists of two members, carried, respectively, by the top bar of the lower sash and the bottom bar of the top sash, and extending across the crack between these two bars. Other types of sash-locks have been devised but the type above referred to is that most commonly used. This type has the disadvantage that it acts solely as a look when the window is closed and is readily accessible through the crack between the sashes by means of thin instruments.

In carrying out my invention, I lock the two sashes through cooperating members action due to a movement of the rod.

carried by the top bar of each sash, thus not only locking the windows without causing one of the members of the lock to pass across the crack between the adjoining bars of the two sashes; but permit the said sashes to be locked with said top bars any desired distance apart. By so doing I provide means whereby the window may be locked in either the open or the closed position, and when locked in the open position, whereby said sashes will be so united as to necessarily move one with the other, and permit the window to be opened at either the top or the bottom without disturbing the sash-lock. This locking mechanism consists of a rod d connected by means of a universal joint to the upper bar of the sash b in a manner to permit said rod to be moved towards and from the sash to adapt it for use as a window pole and later ally towards the window frame to effect its locking or release. This rod d extends from the top bar of the sash b to a point below the top bar of the sash c and its lower end is formed into a rack 6 having a plurality of recesses e, 6 e 6, adapted to straddle and engage a headed stud f carried by the top bar of the frame 0. The head of the stud fpresents a right-angular shoulder toward the top bar of the frame 0 so as to prevent the displacement of said stud through a wedging The rod (1 is provided with a knob handle (1.

Mounted on the top bar of the sash c and adjacent to the inner edge thereof is a plate 9 carrying lugs 9, between which is pivotally mounted a latch member, or detent, 7L adapted to pass behind the bar at when it is engaged with the stud f and prevent that movement thereof toward the frame a necessary to effect its disengagement from the said stud. It will, therefore, be seen that the latch member h and the head of the stud f constitute means preventing movement of the rod d relative to the stud f, thus effectually locking the bar d when engaged with the stud f and, there through, the two sashes b and c with relation to each other.

The universal joint between the sash b and the rod d preferably consists of a socket-plate i having a circular opening 01, of a slightly greater diameter than the rod d and a cooperating member carried by or forming a part of the said rod. formed by bending the end of the rod (Z to form a short shoulder (P, and a tongue d adapted to enter and engage the plate i through the opening '5. The opening i, be-

' ing a trifle larger than the diameter of the rod 1), both form an axis for the lateral movement of the said rod and sufficient clearance for the forward and return movement of said. rod when it is used as a window-pole.

By constructing and arranging the part as described, I not only provide a device which may be used in lieu of the ordinary sash-lock,

This member, preferably, is

and which may be used to lock the window when partly open, but one which may be used centrally on the sashes, thus permitting a single device to lock the window and hold it perfectly tight when closed. Furthermore, its application to the center of the top bars permits the rod d to be used to draw the top sash down or raise it, as desired. Its construction is such that it may be applied to windows and extend directly across the pane without being unsightly.

The operation of my improved sash-lock is substantially as follows: When the window is closed, to lock same, it is merely necessary to raise the latch member or detent h and swing the rod 61 forwardly and laterally until the lowermost recess a of therack 6 passes behind the head of and engages the stud When the recess is so engaged with said stud, the member or detent h is swung upon its pivots passing behind the rod (1 and confining it between said member and said stud. This prevents any such lateral movement of the rod as would permit it to pass the head of the rod f by a backward movement thereof. It will be observed that when so locked, any tool which might be inserted through the crack between the upper sash b and lower sash 0 would not engage any part of the lock mech anism, and could not, even if extended into engagement with the rod-d, so manipulate said rod as to release it, as said rod is held firmly against any movement. When it is desired to open the window for purposes of ventilation, the latch member, or detent h, is swung upward, and the rod 01 swung laterally free of the stud and backwardly at an angle to the window, in which position it acts centrally of the top bar of the sash b as a window pole. By pulling down on this rod, the sash I) may be lowered from the top to the desired extent, and locked in this position in the manner above described, excepting that a recess e, 0 a will engage with the stud f, according to the distance the window is lowered. This does not merely lock the top sash, but locks each sash relative to the other, thus permitting both sashes to be moved upwardly and downwardly in unison, to open the window at either the top or the bottom, or both, as desired. The engagement of the rack 3 with the stud f will prevent any movement of the sash c transmitting such movement to said rod as would raise the latch member, or detent, it. When a slight opening only is provided, that is, one so narrow as to prevent the arm of an intruder being passed therethrough to reach the latch member, or detent, h, the window sashes will be quite as securely locked in their position as when entirely closed.

The universal joint, by means of which the that movement toward and from the sashes esslential to permit it to be used as a window p It is not my intention to limit the invention to the precise details of construction shown in the drawings, it being apparent that such may be varied, and this is particularly true as to the latch member, or detent, h, and the universal connection between the sash and the rod (1, without departing from the spirit and scope of the invention.

Having described my invention, what I claim as new and desire to have protected by Letters Patent is 1. In a sash-lock, the combination of a rod, a pivotal connection between said rod and the top bar of the upper window-sash, whereby said rod may be swung laterally, a rack carried by the lower end of said bar formed by lateral recesses therein, a stud carried by the top bar of the lower sash adapted to be engaged by any of said recesses, and a latch member, or detent, carried by said top bar adjacent to said stud, adapted to hold said rack in engagement with said stud, whereby the two sashes may be locked in the opened, or the closed position relative to each other.

2. In a sash lock, the combination of a rod, a universal joint whereby said rod may be attached to the top bar of the upper window sash, and have movement toward and from the window and laterally thereof, a rack on the lower free end of said rod formed by lateral recesses, a headed stud carried by the top bar of the lower sash and adapted to be engaged by any recess of said rack, and a latch member or detent carried by said top bar adjacent to said stud, adapted to hold said rack in engagement with said stud, whereby the two sashes may be locked relative to each other, in the opened or the closed position.

3. In a sash lock, the combination of a rod having one end thereof bent to form a short shoulder forming a bearing adapted to support the rod, and a tongue and a rack formed by a plurality of lateral recesses adjacent to the other end thereof, a socket plate secured to the inside of the top bar of the upper window sash, and substantially centrally thereof, said plate having an opening therein, of dimensions greater than those of said rod, whereby said shoulder is permitted to pass through said opening and cause said tongue to enter said socket plate to connect said rod to said bar, and permit said rod to move laterally and toward and from the window, a headed stud carried by the top bar of the lower sash and adapted to be engaged by any recess of said rack, and a latch member or detent carried by said top bar adjacent to said stud, adapted to hold said rack in engagement with said stud, whereby the two sashes may be locked relative to each other, in the opened or the closed position.

In witness whereof, I have hereunto affixed my signature, this 13th day of March, 1908, in the presence of two witnesses.

GILBERT S. PRIOR.

Witnesses:

N. L. FROTHINGHAM, HENRY C. KELLER. 

